Editing Johannes Vrach (section)

===The Great Crusade===

After taking command of the XII legion Johannes led them on the Great Crusade dutifully, but he moved forward in a manner much different to that of his brother primarchs. Along with the institution of apothecary cross-training, the Life Bringers also maintained some of the most advanced biological research facilities outside of the Adeptus Mechanicus. Utilizing the wealth of new information afforded to him by Imperial research, Johannes and his men turned this wealth of information to new ends, creating astounding new medical technology along with horrific biological weaponry. Upon discovering the nature of his birth, Johannes became obsessed with fashioning life. 

As they turned toward the galaxy, Johannes and his legion set about correcting the disease they saw within it. Any world deemed pure and willing to join the Imperium peacefully received considerable aid from the Life Bringers, they immediately proceeded to deploy vaccines and cures against known diseases that were common in these worlds. New strains of crop-plants and livestock, designed by the Life Bringers, were introduced to their ecosystems and they were made prosperous. The manifold new diseases discovered throughout these worlds presented challenges to the legion, and Johannes could not help but feel he was fighting a war without end. 

Any civilizations that refused to accept Imperial rule, or those who were obviously debased, were mercilessly and totally purged. Life Bringers first disable any anti-air defenses, then procede with a heavy bombardment of biological and chemical weapons to eliminate all life down to the microscopic level. From the smallest bacteria to he largest animals, the bare planet is seeded with astounding new life tailor made by the legion for survival. After the world was perfectly crafted, and approved by Johannes, settlers from crowded hive worlds were brought in.  Their progress was comparably slow but, because of such dedication, the Life Bringers always left lush paradise worlds and exceptionally fertile agri worlds in their wake. The sectors they conquered became the bread baskets of the expanding Imperium, supplying vast amounts of food to busy Forge Worlds and expedition fleets. 

The Life Bringers' library of biological research grew larger as they expanded outward, and their High Apothecaries and Master Genetors brought forth amazing new results. Each new battlefield was a testing ground for their grand work in an even greater war, the fight against disease and infirmity. Johannes was overwhelmed by the responsibility he felt toward curing the whole of the galaxy, he increasingly retreated from his brother primarchs and spent hours locked away in his gene-labs. If Johannes was truly determined to destroy the afflictions that ruined so many lives, he would have to defeat death itself.